Feeding mechanism for pulverizers.



M. F. WILLIAMS. FEEDING MECHANISM FOR PULVERIZERS.

APPLICATION FILED OGT.29,1910. I

Patented Jan. 21, 1913.

. 2 SHEETS-SHEET 1.

Wmvassss nws/vm/f MILTON F. VV/LL/flMS M. P. WILLIAMS. FEEDING MECHANISM FOR PULVERIZEHS.

APPLICATION FILED 0OT.29,191U.

Patented Jan. 21, 1913.

2 SHEETS-SHBET 2.

m Varvroz M messes w M/ Mu W N m M I I Y B 1. ta en on the line 02%.

especially adapted for use in connection with so snares earner amen.

mason a. wmmms, or s'r. LOUIS,

savanna mm runvsmzas comm, or am. LOUIS, mseouar, a conroaamon OE slams m M I p FEEDING MEGHANISM F08 PULVEBIZEM.

llmll m. specification of Letters Eatant. Patented Jan. 21 1913. this application filed October 29,

enema apfilioetion ales June a, 1910, serial No. seam. amine and mo. swarm). 589,799.

To all whoma ma, concern:

I which is arranged a removable casti 4 con- Be it known that I Mnzron F. Wmuaxas, stitutin a support or a screen ame 5 a citizen of the United States, residing at St. containing a wire mesh covering the dis Louis, is'souri, have invented a certain new charge opening.

and useful Improvement in Feeding Mechanism for Pulverizers of which the following is a full; clear, an exact description, such as will enable others skilled in the art to which it' appertains to make and use the sameif reference being bad to the accompany- Within the casing 1 supported on either side by the casting is a shaft 6 mounted in suitable bearings. Upon this shaft is ara series of hammers or shredders 7, and also at suitablepoints on the shaft 9. series of fan blades 8. e anterior portion ing rawings, forming part of this specificaof the hammers, coiiperatg with a grinding ti n, i wh hsurface 9 suitably mounted interior] of the Figure 1 is an outside elevational view easing outside of the path of trave of the ammers.

The bearings for the shaft 6 as illustrated in Fig. 4 form extensions-for the. casting 1 with a chambered portion 10 communicating with the interior of the cage formed by the grinding surface. These chambers 10 of chutes 11 on'either.

communicate'by means with a chamber 12 of my improved device as applied to a pulverizing machine, certain arts bein cut away in order to better il ustrate the features of the device. Fig. 2 is adetail view of a modification of one of the elements shown in Fig. 1. ig. 3 is a cross sectional view of one of the feeding elements in Fig. Fig. 4 is a plan view of Fig. 1 showing certain of the parts broken away and in section.

is invention relates to a new and useful improvement in side of the machine formed in the base of the machine between 'de by means of extension chutes or spouts 13. The feed box 14 is provided 4 with a pocket or receptacle 15 at its lower side in the faceot which is mounted a rotating damper 16. The damper is mounted .in a hinged door 17 usually locked in closed position. 1 v

Mounted upon the feed box '14 is a casting 8 forming a receptacle for the feeding This casting communicates a pulverizing machine, used with many other chines.

This improved feeding mechanism is described and illustrated in my co-pending application. Serial No. 564,701, filed June 2, 1910, of which this app] ront wall 21, side walls 22 and a movable back wall 23. is movable back wall is pivoted at 24 so that its lower end may swung about said pivot and held in position by means of an adjustpassing through lugs 26 on the side wall and embracing a nut 27.

The feeding mechanism 19 is comprised chutes to catch foreign materials.

e invention consists in the construction, arrangement and combination of the various parts as will hereinafter be described and pointed out in the claims.

In the drawings 1 indicates a casting which is preferably anchored to suitable of a shaft 28 rotatably mountedin the sides timbers 9 constituting the having a feed'cylinder 29 thereon. plate. This casting constitutes a casing in -.This cylinder is comprised of four-armed the peripheral wall of. which is arranged two 30 connected by cross bars 31. hole plates '3 by which access may be g A bracket 32 is provided, attached to the gained to the interior. The outer part of casting l as a journal for the shaft 28. A the casting is provided with an opening in l ratchet wheel 33 is fixe MISSOURI, MSIQNOR T0 WILLIAMS PATENT d to the shaft and a y thus reduced 48 which may engage 'mounted a block 39 which maybe clamped 1n any position in the slot-by means of a 'stud 40. The stud 40 is connected by means rod 41 to an eccentric 42 I of an eccentric mountedon a shaft 43 suitably journaled'on the opposite side of the pulverizer.

A pulley 44 is mounted on the shaft 43 and belt connected to a pulley 45 on shaft 46 suitably mounted at the base of the casting 1. On the shaft 46 is also mounted a %ulley 47 connected by belt with the shaft 6.

y this means the main shaft Gacts to drive the feeding mechanism mounted on the shaft 28.

As shown in Fig. 2 the construction of the arm 38 may be varied by. providing a screw the block on the stud 39 to adjust the end of the rod 41 along the length of'the arm. I

The operation of the machinein reducing I material to powdered form is as follows: The

material to be reduced is supplied to the feed pipe 20 and fed in predetermined quanuties-to the machine. I As the machine operates the fan blades 8 serve to draw the mate rial with airinto the machine through the feed openings around the shaft 6, said feed openings acting in this particular like the eyes of a fan- The-fan blades 8 tend to draw the material toward the center of the zone of the revolvinghammers. Centrifugal force tends to draw the material outwardlyagainst'thc grinding surface. The curved hammers or beaters tend to pick up thematerial from the grinding surface by scooping action, and return it toward the center of themachine' in opposition to the action of centrifugal force,

not only by contacting with-the grinding surface and the hammers, but by attrition, the oppositely moving particles movingagainst each other so that ultimately they are of sufiicient fineness to pass through the screen 5 and into the discharge pipe which is preferably connected. to an exhaust fan. The pocket 15 is'providedfor the reception of any particles of iron or other foreign material too heavy for the air entering through the dampers 16, to carry into the machine. The auxiliary air supply pipes 11 which are controlled by dampers lead into the feed openings at the eye of the machine on either sidefor th purpose of effecting further control of the amount fed into the machine. These auxiliary air supply pipes lead from the bottom of the machine and dust or pulverized material escaping through 1 of ing such material, but this space the material is v of air to ,terial to said feed box from tend to keep the same clear from I the cracks in the bars of the grinding surface, and which mi ht tend to accumulate on the grinding sur ace. The spaces on the grinding surface-form a receptaclefor catchmunication with the exterior around the flange ring surrounding the, screen -5. By this construction air drawn through the pipes 11 passes downwardly around the bars of the grinding surfaces and draws articles of dust escaping therefrom ack into the machine when they will be d' charged through the discharge pipe.

By providing an adjusta 1e wall 23 the amount of material fed into the machine may be increased. This amount is normally controlled by the position of the feed cylinder 29, which is operated intermittently through means of concentric connections with the shaft 43 operatively connected with the main shaft 6. -By adjusting the rod 41 along the length of the arm 38 this feeding operation may be increased or diminished as desired.

I am aware made in the construction,

that minor changes may be arrangement an combination of my invention as herein shown and described without departing from the nature and spirit of my invention, the

scope of which is indicated in the accompanying claims.

What I claim is:

1. A feeding mechanism for pulverizers comprising in combination, a receptacle into which material'is to be fed. a feed supply pipe, a feed chamber communicating wit the receptacle. a feed box, feeding mechanism adapted to deliver material from the feed supply pipe to the feed box, a feed spout afiording communication between the feed chamber and the feed box, a fan adapted to. force material from the feed box through the feedspout and into the receptacle, and means for regulating the supply the feed box.

2. A feeding mechanism comprising in combination. a receptacle for the reception of material, a feed sitely disposed feed chambers communicating with the receptacle. a feed box. feed mechanism for regulating the supply of mathe feed supply member, a spout connecting said feed box with each of said feed operating in proximity to said feed chambers and adapted to force the material from said feed box into said receptacle.

, 3. In a feeding mechanism in combination, a receptacle, a feed supply, a'feed box below the feed supply. mechanism for controlling the supply of feed from the feed supply to the feed box, feed chambers disposed at opposite ends of ,the receptacle. feed spouts extending from opposite sides the feed box to the feed chambers re- :gcewee g signeture in the resence of iswo w zitiiesees this 25th day of ctober, 1910.

MILTUN 1F. WILLIAMS.

spectively, fans disposed intermediate the feed chamber and the receptacle and adapted to draw material from the feed box into the receptacle, and means in communication with the feed box for regulating the supply Witnesses:

of air uniformly to the feed spouts. P. SMETH,

In testimony whereof I hereunto affix my ALMA Geemuz'r. 

